Kendall Fells, the organizing director behind the Fight for $15, said the protesters are seeking support from either party.

"These workers are living in poverty. They have to decide whether to feed themselves or their kids, so they're not concerned with political parties or whether a candidate is running for city council or president," Fells said. "They care about two things: getting $15 an hour and the right to unionize. It's about getting out of poverty."

Thursday's rally is the latest attempt to put pressure on 2016 candidates. It follows walkouts in Charleston, South Carolina, Des Moines, Iowa, Milwaukee, Wisconsin, and Manchester, New Hampshire, in recent months.

The previous Milwaukee walkout ended at a rally outside a GOP debate where the first question posed to candidates was about the Fight for $15 and the strikers.

According to the Fight for $15, nearly 64 million Americans are paid less than $15 an hour.